Added flag -benchmark for: ./darknet classifier demo ... -benchmark

src/classifier.c

@@ -1187,7 +1187,7 @@ void gun_classifier(char *datacfg, char *cfgfile, char *weightfile, int cam_inde
 #endif
 }
 
-void demo_classifier(char *datacfg, char *cfgfile, char *weightfile, int cam_index, const char *filename)
+void demo_classifier(char *datacfg, char *cfgfile, char *weightfile, int cam_index, const char *filename, int benchmark)
 {
 #ifdef OPENCV
     printf("Classifier Demo\n");
@@ -1220,22 +1220,35 @@ void demo_classifier(char *datacfg, char *cfgfile, char *weightfile, int cam_ind
     int* indexes = (int*)calloc(top, sizeof(int));
 
     if(!cap) error("Couldn't connect to webcam.\n");
-    create_window_cv("Classifier", 0, 512, 512);
+    if (!benchmark) create_window_cv("Classifier", 0, 512, 512);
     float fps = 0;
     int i;
 
+    double start_time = get_time_point();
+    float avg_fps = 0;
+    int frame_counter = 0;
+
     while(1){
         struct timeval tval_before, tval_after, tval_result;
         gettimeofday(&tval_before, NULL);
 
         //image in = get_image_from_stream(cap);
-        image in = get_image_from_stream_cpp(cap);
-        image in_s = resize_image(in, net.w, net.h);
+        image in_s, in;
+        if (!benchmark) {
+            in = get_image_from_stream_cpp(cap);
+            in_s = resize_image(in, net.w, net.h);
             show_image(in, "Classifier");
+        }
+        else {
+            static image tmp;
+            if (!tmp.data) tmp = make_image(net.w, net.h, 3);
+            in_s = tmp;
+        }
 
         double time = get_time_point();
         float *predictions = network_predict(net, in_s.data);
         double frame_time_ms = (get_time_point() - time)/1000;
+        frame_counter++;
 
         if(net.hierarchy) hierarchy_predictions(predictions, net.outputs, net.hierarchy, 1);
         top_predictions(net, top, indexes);
@@ -1244,17 +1257,21 @@ void demo_classifier(char *datacfg, char *cfgfile, char *weightfile, int cam_ind
         printf("\033[2J");
         printf("\033[1;1H");
 #endif
-        printf("\nFPS: %.2f \n", fps);
+        printf("\rFPS: %.2f \t AVG_FPS = %.2f ", fps, avg_fps);
 
-        for(i = 0; i < top; ++i){
+        if (!benchmark) {
+            printf("\n");
+            for (i = 0; i < top; ++i) {
                 int index = indexes[i];
-            printf("%.1f%%: %s\n", predictions[index]*100, names[index]);
+                printf("%.1f%%: %s\n", predictions[index] * 100, names[index]);
             }
 
             free_image(in_s);
             free_image(in);
 
-        wait_key_cv(10);// cvWaitKey(10);
+            int c = wait_key_cv(10);// cvWaitKey(10);
+            if (c == 27 || c == 1048603) break;
+        }
 
         //gettimeofday(&tval_after, NULL);
         //timersub(&tval_after, &tval_before, &tval_result);
@@ -1262,6 +1279,14 @@ void demo_classifier(char *datacfg, char *cfgfile, char *weightfile, int cam_ind
         float curr = 1000.f / frame_time_ms;
         if (fps == 0) fps = curr;
         else fps = .9*fps + .1*curr;
+
+        float spent_time = (get_time_point() - start_time) / 1000000;
+        if (spent_time >= 3.0f) {
+            //printf(" spent_time = %f \n", spent_time);
+            avg_fps = frame_counter / spent_time;
+            frame_counter = 0;
+            start_time = get_time_point();
+        }
     }
 #endif
 }
@@ -1299,6 +1324,7 @@ void run_classifier(int argc, char **argv)
     }
 
     int dont_show = find_arg(argc, argv, "-dont_show");
+    int benchmark = find_arg(argc, argv, "-benchmark");
     int dontuse_opencv = find_arg(argc, argv, "-dontuse_opencv");
     int show_imgs = find_arg(argc, argv, "-show_imgs");
     int calc_topk = find_arg(argc, argv, "-topk");
@@ -1314,7 +1340,7 @@ void run_classifier(int argc, char **argv)
     if(0==strcmp(argv[2], "predict")) predict_classifier(data, cfg, weights, filename, top);
     else if(0==strcmp(argv[2], "try")) try_classifier(data, cfg, weights, filename, atoi(layer_s));
     else if(0==strcmp(argv[2], "train")) train_classifier(data, cfg, weights, gpus, ngpus, clear, dontuse_opencv, dont_show, mjpeg_port, calc_topk, show_imgs);
-    else if(0==strcmp(argv[2], "demo")) demo_classifier(data, cfg, weights, cam_index, filename);
+    else if(0==strcmp(argv[2], "demo")) demo_classifier(data, cfg, weights, cam_index, filename, benchmark);
     else if(0==strcmp(argv[2], "gun")) gun_classifier(data, cfg, weights, cam_index, filename);
     else if(0==strcmp(argv[2], "threat")) threat_classifier(data, cfg, weights, cam_index, filename);
     else if(0==strcmp(argv[2], "test")) test_classifier(data, cfg, weights, layer);